gsk:transform-perspective (transform depth)

transform -- a gsk:transform instance
depth -- a number coerced to a single float with the distance of the z=0 plane, lower values give a more flattened pyramid and therefore a more pronounced perspective effect

The new gsk:transform instance.

Applies a perspective projection transform. This transform scales points in x and y based on their z value, scaling points with positive z values away from the origin, and those with negative z values towards the origin. Points on the z=0 plane are unchanged.